International Klein Blue

#0829A8

About International Klein Blue

International Klein Blue, often abbreviated as IKB, is a deep blue hue first mixed by the French artist Yves Klein. Klein registered this color as a trademark in 1957, although the trademark's validity has been debated. This ultramarine pigment is renowned for its intensity and high saturation, achieved through a specific formula that suspends the dry pigment in a synthetic resin, preserving the pigment's original qualities. The visual impact of IKB comes from its strong presence, seemingly without depth. It evokes feelings of limitlessness and vastness, akin to the sky or the sea. This distinctive blue has found applications beyond art, including fashion, design, and branding, where its captivating hue brings a touch of sophistication and originality.

The hex color #0829a8, also known as International Klein Blue, presents significant accessibility challenges due to its low luminance. When used as a foreground color, it requires a very light background to meet WCAG (Web Content Accessibility Guidelines) standards for contrast ratio. A contrast ratio of at least 4.5:1 is recommended for normal text and 3:1 for large text. Using this blue with dark backgrounds should be avoided, as it can cause eye strain and readability issues for users, especially those with visual impairments. To improve accessibility, consider pairing it with colors like white, light yellow, or very pale gray. Moreover, providing alternative text and visual cues is crucial for users who may not be able to distinguish the color due to color blindness or other visual impairments. Ensure interactive elements using this color have sufficient visual indicators beyond just color.

Shades

Digital Color Formats

RGB
8 41 168
RGB8 41 168
Red
Green
Blue
HSL
227.63deg 90.91% 34.51%
227.6390.9134.51HSL
Hue
Saturation
Lightness
HWB
227.63deg 3.14% 34.12%
227.633.1434.12HWB
Hue
Whiteness
Blackness
hex#0829A8
rgb8 41 168
hsl227.63deg 90.91% 34.51%
cmyk95.24% 75.6% 0% 34.12%
hwb227.63deg 3.14% 34.12%
xyz-d650.08 0.04 0.37
oklch0.3716 0.2018 264.75
oklab0.3716 -0.02 -0.2
CMYK
95.24% 75.6% 0% 34.12%
95.2475.6034.12CMYK
Cyan
Magenta
Yellow
Key
XYZ-d65
0.08 0.04 0.37
0.080.040.37XYZ
X
Y
Z
OKLCH
0.3716 0.2018 264.75
0.37160.2018264.75LCH
Lightness
Chroma
Hue
OKLAB
0.3716 -0.02 -0.2
0.3716-0.02-0.2LAB
Lightness
Green-Red
Blue-Yellow

Alternative colors

Applications

Complementary color

Buttons